5-277-06-042-001

The Diamondback tank heater platform pairs a double-wall two-pass U-bend bundle with proven shell-side baffling, and this configuration applies that design to in-tank heating with boiler water in the tubes and cross-contamination protection. The vented air gap between tube walls gives a visible telltale leak rather than allowing boiler water and tank contents to mix. Physically, the unit runs a 6-inch shell in a 2-pass arrangement. It carries 3/4-inch O.D. tubes. That combination is cataloged as 5-277-06-042-001. As furnished, materials include cast iron bonnets, steel shell, and copper (double wall) tubes. Operating limits are 150 PSI on the shell side, 150 PSI on the tube side, and 375°F maximum temperature.